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Cheap flights from Ireland to Belfast from €45

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ireland to Belfast departing on 17/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from Ireland to Belfast

Recent return flight deals from Ireland to Belfast

Enter your travel dates to find the best prices.
Multiple Airlines Logo
21:20 - 07:05
DUB
-
BFS
9h 45m
1 stop
Multiple Airlines Logo
07:35 - 19:55
BFS
-
DUB
12h 20m
1 stop
€82Multiple Airlines
Tue, 11 Aug - Tue, 18 Aug
Multiple Airlines Logo
21:20 - 07:05
DUB
-
BFS
9h 45m
1 stop
Multiple Airlines Logo
07:35 - 19:55
BFS
-
DUB
12h 20m
1 stop
€85Multiple Airlines
Tue, 11 Aug - Tue, 18 Aug
Multiple Airlines Logo
23:10 - 08:15
DUB
-
BFS
9h 05m
1 stop
Multiple Airlines Logo
23:30 - 08:25
BFS
-
DUB
8h 55m
1 stop
€86Multiple Airlines
Sun, 16 Aug - Tue, 25 Aug
Multiple Airlines Logo
21:20 - 07:05
DUB
-
BFS
9h 45m
1 stop
Multiple Airlines Logo
07:35 - 19:50
BFS
-
DUB
12h 15m
1 stop
€87Multiple Airlines
Tue, 25 Aug - Tue, 1 Sep
Multiple Airlines Logo
23:10 - 08:15
DUB
-
BFS
9h 05m
1 stop
Multiple Airlines Logo
23:30 - 08:25
BFS
-
DUB
8h 55m
1 stop
€87Multiple Airlines
Sun, 16 Aug - Tue, 25 Aug
Multiple Airlines Logo
23:10 - 08:15
DUB
-
BFS
9h 05m
1 stop
Multiple Airlines Logo
23:30 - 08:25
BFS
-
DUB
8h 55m
1 stop
€88Multiple Airlines
Sun, 16 Aug - Tue, 25 Aug
Multiple Airlines Logo
22:25 - 07:05
ORK
-
BFS
8h 40m
1 stop
Multiple Airlines Logo
07:35 - 21:45
BFS
-
ORK
14h 10m
1 stop
€88Multiple Airlines
Tue, 4 Aug - Tue, 11 Aug
Multiple Airlines Logo
21:45 - 09:35
DUB
-
BFS
11h 50m
1 stop
Multiple Airlines Logo
08:40 - 14:55
BFS
-
DUB
6h 15m
1 stop
€89Multiple Airlines
Sat, 15 Aug - Mon, 24 Aug
Multiple Airlines Logo
23:10 - 08:15
DUB
-
BFS
9h 05m
1 stop
Multiple Airlines Logo
23:30 - 08:25
BFS
-
DUB
8h 55m
1 stop
€90Multiple Airlines
Sun, 16 Aug - Tue, 25 Aug
Multiple Airlines Logo
22:25 - 07:05
ORK
-
BFS
8h 40m
1 stop
Multiple Airlines Logo
07:35 - 21:45
BFS
-
ORK
14h 10m
1 stop
€90Multiple Airlines
Tue, 4 Aug - Tue, 11 Aug

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British Airways flights from Ireland to Belfast

Our best British Airways deals on Ireland to Belfast flight tickets
British Airways
7 Sept
DUB20:30Dublin
12h 20m
1 stop
BHD08:50Belfast City
13 Sept
BHD20:10Belfast City
11h 35m
1 stop
DUB07:45Dublin
€205
British Airways
26 Aug
DUB10:30Dublin
7h 05m
1 stop
BHD17:35Belfast City
30 Aug
BHD06:30Belfast City
9h 50m
1 stop
DUB16:20Dublin
€225
British Airways
16 Oct
DUB20:10Dublin
12h 40m
1 stop
BHD08:50Belfast City
17 Oct
BHD19:05Belfast City
14h 35m
1 stop
DUB09:40Dublin
€239

Aer Lingus flights from Ireland to Belfast

Our best Aer Lingus deals on Ireland to Belfast flight tickets
Aer Lingus
7 Sept
DUB06:30Dublin
11h 20m
1 stop
BHD17:50Belfast City
13 Sept
BHD13:35Belfast City
7h 15m
1 stop
DUB20:50Dublin
€198
Aer Lingus
7 Sept
DUB07:40Dublin
4h 15m
1 stop
BHD11:55Belfast City
13 Sept
BHD12:50Belfast City
4h 25m
1 stop
DUB17:15Dublin
€266
Aer Lingus
3 Sept
ORK19:20Cork
19h 35m
1 stop
BHD14:55Belfast City
9 Sept
BHD09:50Belfast City
9h 00m
1 stop
ORK18:50Cork
€324

momondo Fare Finder

 
Customise your flight search to find flights from Ireland to Belfast that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 13,528 searches. Data last updated 16 July 2026.
Use the filters below to find and compare flights from Ireland to Belfast that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Tue 11/8

21:20-07:05

1 stop9h 45m

Belfast Intl

Tue 18/8

07:35-19:55

1 stop12h 20m

€82

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Tue 11/8

21:20-07:05

1 stop9h 45m

Belfast Intl

Tue 18/8

07:35-19:55

1 stop12h 20m

€85
Fastest return journey

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sun 16/8

23:10-08:15

1 stop9h 05m

Belfast Intl

Tue 25/8

23:30-08:25

1 stop8h 55m

€86

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Tue 25/8

21:20-07:05

1 stop9h 45m

Belfast Intl

Tue 1/9

07:35-19:50

1 stop12h 15m

€87

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sun 16/8

23:10-08:15

1 stop9h 05m

Belfast Intl

Tue 25/8

23:30-08:25

1 stop8h 55m

€87

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sun 16/8

23:10-08:15

1 stop9h 05m

Belfast Intl

Tue 25/8

23:30-08:25

1 stop8h 55m

€88

CorkBelfast

ORK - BFS

ORKBFS

Cork

Tue 4/8

22:25-07:05

1 stop8h 40m

Belfast Intl

Tue 11/8

07:35-21:45

1 stop14h 10m

€88

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sat 15/8

21:45-09:35

1 stop11h 50m

Belfast Intl

Mon 24/8

08:40-14:55

1 stop6h 15m

€89

DublinBelfast

DUB - BFS

DUBBFS

Dublin

Sun 16/8

23:10-08:15

1 stop9h 05m

Belfast Intl

Tue 25/8

23:30-08:25

1 stop8h 55m

€90

CorkBelfast

ORK - BFS

ORKBFS

Cork

Tue 4/8

22:25-07:05

1 stop8h 40m

Belfast Intl

Tue 11/8

07:35-21:45

1 stop14h 10m

€90

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Belfast from

How to get the cheapest flight ticket from Ireland to Belfast

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest airline that flies from Ireland to Belfast?

Ryanair, British Airways, and Aer Lingus are the most popular carriers operating from Ireland to Belfast

Cheap Ireland to Belfast flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ireland to Belfast

Fastest flight time

4h 00m

Direct flights

None
The fastest flight from Ireland to Belfast takes 4h 00m
There are no direct flights from Ireland to Belfast. There are no popular flight routes from Ireland to Belfast.
Search flight deals

Frequently asked questions about flying from Ireland to Belfast

  • When did momondo last update prices for flights from Ireland to Belfast?

    Prices for flights from Ireland to Belfast are refreshed on a daily basis.

  • How old do you have to be to fly from Ireland to Belfast?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ireland to Belfast.

  • What documentation or ID do you need to fly to Belfast?

    The required travel and health documents for your Belfast trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's licence and a passport valid for six months after your intended arrival at Belfast. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Why use momondo?

Why should I use momondo to find a flight deal from Ireland to Belfast?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ireland to Belfast . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ireland to Belfast with flexible booking policies on momondo?

Yes. All flights to Belfast from Ireland on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Ireland to Belfast?

Once all potential Ireland to Belfast flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ireland to Belfast right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Ireland to Belfast now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Belfast and let you know when they change.

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Find better results for your trip to the United Kingdom

Fly into one of these airports located in Belfast

Airports listed have a maximum distance of 19.6 km from Belfast
Belfast Intl Airport
Belfast City Airport